-Robert Upshaw: The ex-Washington center helped himself in a big way measuring 6'10.75 without shoes with a 7'5.5 wingspan, 9'5 standing reach, and a 258.2 pound frame. Finishing as the 3rd tallest and heaviest prospect in attendance, Upshaw also posted the longest wingspan, highest standing reach, and biggest hands in terms of both length and width of any player measured here. His measurements compare favorably to Nene who measured 6'9.25 without shoes with a 7'4.5 wingspan and 253-pound frame coming out of Brazil in 2002. Upshaw's standing reach is right on par with players like Shaquille O'Neal, Brook Lopez, and DeMarcus Cousins as one of the top-25 in our database all-time. Needless to say, the Fresno State transfer who was dismissed from the program after only 19 games has outstanding size for the center position. Interestingly, Upshaw is actually lighter than he was when he was measured at the Amare Stoudemire Camp in 2011 when he stood 7' in shoes with a 7'4 wingspan and 264-pound frame. Very few teams question Upshaw's talent on the court. It's his history of off-court issues that is scaring many away at the moment. With that said, it is incredibly difficult it is to find player's in Upshaw's mold these days, so it won't be a surprise if someone decides to roll the dice and see if they can get him on the right track.

-Willie Cauley-Stein: The Kentucky center measured 6'11.25 without shoes with a 7'3 wingspan and a 242 pound frame. His 6.3% body fat is very low for a big man and his standing reach ranks 5th among the players measured here. Cauley-Stein isn't as historically large as Upshaw, but his measurements aren't far off those of Chris Bosh who measured 6'10.25 with a 7'3.5 wingspan and a 225-pound frame coming out of Georgia Tech. Cauley-Stein measured a little longer than he had in the past, and that, combined with his terrific agility, instincts and anticipation skills make it very easy to see him developing into a defensive stopper in the NBA.

-D'Angelo Russell: The elite shooting guard prospect measured right on par with expectations. Standing 6'3.25 without shoes, or a legit 6'5 in shoes, Russell has excellent size for a guard to go along with a 193 pound frame that he's added almost 20 pounds of muscle to over the last two years, along with a 6'9.75 wingspan. He has terrific length for his height, which sets him apart from many guard prospects we've seen recently. His closest physical comparison in terms of height and length is actually Victor Oladipo, who measured 6'3.25 without shoes with a 6'9.25 wingspan, albeit with a heavier 213-pound frame. Russell's hand size and width also rank well above average among the players in attendance here regardless of position. Combine all that with his sweet shooting stroke, tremendous court vision, ball-handling and creativity, and you have all the makings of an elite guard prospect.

-Justise Winslow: Standing 6'4.5 without shoes with a 6'10.25 wingspan and a 221.8-pound frame, Winslow doesn't really stand out on paper among his peers in terms of sheer size, aside from his tiny 5.3% body fat percentage. The Duke product is almost exactly the same size as Lance Stephenson, who measured 6'4.5 without shoes to go along with a 6'10.5 wingspan while tipping the scales at 227 pounds. Though Winslow's raw size may not stand out, he figures to be one of the more impressive athletes in attendance.

-Frank Kaminsky: The Wisconsin star measured 6'11.75 without shoes to go along with a middling 6'11 wingspan and a 231-pound frame. Those numbers are similar to those of Cody Zeller (6'10.75, 6'10.75 wingspan, 230 pounds) and better than Kelly Olynyk, who measured 6'10.75 without shoes and a 6'9.75 wingspan. Kaminsky lacks outstanding length and was the only player in attendance to post a wingspan to height ratio below 1.0, but his height ranks prominently among similarly skilled big men in recent memory.

-Kelly Oubre and Rondae Hollis-Jefferson: The pair of highly touted wings measured very similarly here. Oubre is 6'5.75 without shoes with a 7'2.25 wingspan and a 202.8 pound frame while Hollis-Jefferson measured 6'5.5 without shoes with a 7'2 wingspan and a 210.8 pound frame. On top of being the heavier of the two, Hollis-Jefferson had the highest standing reach edging Oubre 8'8 to 8'6.5 in that test. Both players compare favorably to former Maverick and Wake Forest standout Josh Howard who measured 6'5.25 without shoes with a 7'2 wingspan and 202-pound frame coming out of school in 2003. They're both a bit smaller than Kawhi Leonard who measured 6'6 without shoes with a 7'3 wingspan and a 227-pound frame, but Leonard's wingspan mark puts the length both players possess in proper perspective.

-Myles Turner: Texas freshman Myles Turner is in largely the same boat as Cauley-Stein in that he measured extraordinarily well, but not quite as well as Upshaw. Standing 6'11.25 with a 7'4 wingspan and a 238.6-pound frame, he has terrific size for a NBA big man. His 9'4 standing reach ranks second among all players in attendance. Considering his tremendous physical attributes, combined with his ability to shoot the ball with range and block shots, teams in the mid to late lottery will have to think long and hard before passing on Turner.

-Tyus Jones: The skilled point guard measured 6'0.25 without shoes to go along with a 6'5 wingspan and a 184.6 pound frame. Measured at 6'0.75 with shoes last year by USA Basketball, it is safe to say Jones has grown a bit since that time, but he was also 191 pounds with a 6'5.25 wingspan at that point. While every little bit in terms of size helps for a player like Jones, his weight loss is also interesting. Interestingly, Jones compares favorably to both Mike Conley and Chris Paul when they were coming out of Ohio State and Wake Forest respectively. Conley measured 5'11.75 without shoes with a 6'5.75 wingspan and a 175-pound frame while Paul was 5'11.75 with a 6'4.25 wingspan and a 178-pound frame. Though Jones doesn't have elite quickness like those two players, from a sheer size standpoint, he fits in with some of the league's top floor generals.

-George de Paula: The young Brazilian guard largely matched his Nike Hoop Summit measurements. Standing 6'4.5 without shoes with a 7' wingspan, Lucas has outstanding size for a player who spends time at the point guard position. De Paula is pretty much the same size as Marshon Brooks was coming out of Providence, except he plays exclusively at the point and not on the wing like Brooks. Brooks measured 6'4.25 without shoes with a 7'1 wingspan and a 195-pound frame. De Paula has an impressive frame in his own right tipping the scales at 197 pounds with a very low 6.7% body fat ratio, finished 7th in hand width and 2nd in hand length among all players here (largely surrounded by power forwards and centers on the list), and is still only 18. Needless to say, he's one of the most unique physical specimens at the point guard position in this draft, or any draft for that matter. It's safe to say that NBA teams will be watching him very very closely the next few days.

-Stanley Johnson: The Arizona freshman measured 6'5 without shoes with a 6'11.5 wingspan and a 241.8 pound frame. Measured 6'6.75 without shoes by USA Basketball last summer, this is an underwhelming measurement for the strong, talented wing. His strength sets him apart from the average wing prospect, and he compares favorably to Jae Crowder who measured 6'4.75 with a 241-pound frame and a 6'9.25 wingspan in 2012.

-Dakari Johnson: The Kentucky sophomore measured 6'11 with a 7'2 wingspan and a 264.6 pound frame, making him the heaviest player in attendance. His 10.5 body fat percentage at the UK Pro Day last fall grew to 14.9% here. That's the highest percentage of any player here, but it isn't outrageous by any means, as we've seen a number of players surpass 20% in the past. Johnson is built similarly to Aaron Gray who measured 7'0 with a 7'3.25 wingspan and a 271-pound frame in 2007.

-Sam Dekker: The Wisconsin forward measured 6'7.75 without shoes, which matches the height he posted last summer when his growth was a point of interest. He's lost 10 pounds since then, which is interesting considering he wasn't carrying much extra weight on his frame. at 219 points with just a 7.5% body fat percentage, he has plenty of room on his frame to continue to add bulk, which he certainly will at the NBA level.

-Devin Booker: Measuring 6'4.5 without shoes with a 6'8.25 wingspan and a 205.8-pound frame, Booker came in .75 inches below what he measured without shoes at the UK Pro Day, which is a bit disappointing. Perhaps more importantly for him, though, he measured a wingspan over two inches longer, which is a positive development. He's almost exactly the same size and Spencer Dinwiddie who measured 6'4.5 without shoes with a 6'8.25 wingspan and a 206 pound frame last spring.

-Trey Lyles: The freshman forward measured 6'9 without shoes on with a 7'1.5 wingspan and a 241.2 pound frame. He's about the same size as Josh McRoberts who measured 6'8.75 without shoes with a 7'1 wingspan and a 240 pound frame coming out of Duke. Lyles has the size to play power forward at the NBA level, but with his 9-foot standing reach, he could even see some minutes as a small-ball center.

-Montrezl Harrell: Harrell measured only 6'7 without shoes, but compensated with a huge 7'4.25 wingspan. Harrell's wingspan to height differential is a ridiculous 9.25 inches. His 253 pound frame for his length and explosiveness puts him in a somewhat unique group body-type wise. He's essentially a bigger version of Ike Diogu who measured 6'6.5 without shoes with a 7'3.5 wingspan and a 255 pound frame.

-Rakeem Christmas: The Syracuse senior measured a tremendous 7'5.25 wingspan ranking just behind Robert Upshaw. At 6'8.25 without shoes, Christmas has impressive length, especially when you take into account his 9'2.5 standing reach, which should allow him to continue to play most of his minutes at the center position without any real issue. At 243 pounds, he certainly has the frame to do it against most NBA backups.

-Michael Qualls: The Arkansas swingman stand 6'4 with a 7'0.25 wingspan and 4% bodyfat. He's tremendously long and the leanest player in attendance here. Combine that with his impressive athleticism and you're looking at quite a physical specimen.

-R.J. Hunter: The George State scorer measured 6'4.5 with a 6'10.5 wingspan and a slender 185-pound frame. He's a bit heftier than a young Jamal Crawford, who measured 6'4.5 without shoes with a 6'10 wingspan and a 175-pound frame way back in 2000. Hunter's length gives him quite a bit of positional flexibility and will be very attractive to NBA teams when considering his outstanding shooting stroke and ability to pass the ball.

-Cameron Payne: Payne measured 6'0.75 with a 6'7.25 wingspan and a 182.6 pound frame. He's slightly bigger than Jeff Teague who measured 6'0.25 with a 6'7.5 wingspan and a 175-pound frame.

-Ryan Boatright: The smallest player in attendance at 5'10 with a 6'0.5 wingspan, it will be interesting to see if Boatright can follow in Jahii Carson's footsteps and compensate with a massive vertical leap.

In a draft class lauded for its guards, three exceptionally talented, and wildly different, forward prospects sit in the top six of our mock draft, each taking a very different path to the top, and demonstrating wildly contrasting strengths and weaknesses. So who is the best prospect among the three?